CN104792555A - Automotive toe-in measuring device and automotive toe-in measuring method using same - Google Patents
Automotive toe-in measuring device and automotive toe-in measuring method using same Download PDFInfo
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Abstract
The invention relates to an automotive toe-in measuring device and an automotive toe-in measuring method using the same. The automotive toe-in measuring device comprises a base; a vertical arm capable of telescoping in the vertical direction is arranged on the base; a cross arm capable of telescoping in the front-rear direction is connected to the vertical arm; the cross arm is provided with an aligning device used for aligning the center of a wheel hub; the cross arm is provided with a graduation ruler capable of extending in the left-right direction and telescoping in the left-right direction; the graduation ruler is provided with a measuring head used for positioning and measuring a fixed point. The invention aims to solve the technical problem that the exiting wheel tire worn affects measuring precision.
Description
Technical field
The present invention relates to the toe-in of automobile measuring method of a kind of toe-in of automobile measurement mechanism and this device of use.
Background technology
Automobile chassis needs to adjust toe-in, after automobilism a period of time, easily causes Wheel toe-in overproof, thus causes running out the way, at a high speed puts the phenomenons such as shake, waving at high speed, abnormal tyre wearing and tearing.At present, in the maintenance process of steering axle of automobile, many producers all adopt the four-wheel positioning measurement equipment of specialty to adjust toe-in, but this kind equipment not only invests large but also complex operation, fail to obtain universal and effectively application in regional service station and maintenance station.
In order to solve the problem, the easy prenex survey instrument of normal employing in prior art, as shown in Figure 1, prenex survey instrument comprises left socle 80 and right support 81, is provided with cross bar 82 between left and right support, left and right support can along the axially directed movement of cross bar 82, and then the distance between adjustment two stands, two stands has measuring head, the crown aligned contact of measuring head and tire during measurement, cross bar 82 has scale, the distance between two stands can be measured.During measurement, by automobile parking on platform, beat positive vehicle steering, namely automotive wheel 83 is adjusted in craspedodrome state, on a left side, a fixed point respectively got by right wheel, two fixed points are respectively left measurement fixed point and right measurement fixed point, left, right measurement fixed point is horizontal with the line at corresponding hub for vehicle wheel center, prenex survey instrument is fixed a point corresponding with measurement, as shown in Figure 2, measure left, the right distance measured between fixed point, measurement data is A, rotate automotive wheel, turn a wheel 180 °, again measure a left side, the right distance measured between fixed point, measure second group of data B, the diameter of known automotive wheel is D, calculate the difference B-A of A and B, this difference is toe-in value, diameter D according to automobile can also calculate front beam tilt angle.
Above-mentioned prenex survey instrument is measured from the inner side of wheel, when measuring as oversize vehicles such as passenger vehicle, lorry, trucies, because the distance between left and right wheel is comparatively large, just need the axial length increasing cross bar, make the length of prenex survey instrument larger, during measurement adjustment and location very inconvenient, and because the axial length of cross bar is longer, there is radial missing in cross bar, error during measurement is comparatively large, causes measuring accuracy lower.
The toe measurement device that also there is a kind of areal survey in prior art carrys out the toe-in value of automobile, namely measure from the outside of automotive wheel, such as application number be 201310413041.9 Chinese invention patent application disclose a kind of united reaper detection method for toe-in, and disclose a kind of prenex pick-up unit, this device uses in pairs, often comprise two toe measurement device be symmetrical set for a pair, each toe measurement device comprises electronic control translation stage, electronic control translation stage can move horizontally measuring position, electronic control translation stage is fixed with trailing arm, trailing arm vertically can adjust measuring position, trailing arm is connected with transverse arm, transverse arm and trailing arm intersect to form cross structure, the two ends of transverse arm are equipped with laser sensor, laser sensor can move horizontally on transverse arm, laser pen and camera is provided with in the middle part of transverse arm, laser pen and camera constitute the alignment device of finding hub for vehicle wheel center accurately, this device comprises acquisition controller and computing machine, the laser pen collected and camera signals are input to computing machine by acquisition controller, and the output signal of acquisition controller receiving computer controls electronic control translation stage, but this device needs to arrange laser sensor when measuring, and also needs computer software analysis, causes the cost of this device higher, be unfavorable for the universal use in service station and maintenance station.This device in use, be fixed in detection line by symmetrical for a pair above-mentioned toe measurement device, moved to by the deflecting roller of vehicle between two toe measurement device, left and right two wheels are corresponding with left and right two toe measurement device respectively, and two toe measurement device are measured from the outside of wheel; During measurement, adjustment deflecting roller is craspedodrome state, adjustment electronic control translation stage and trailing arm, laser pen is made to be positioned at the center of hub for vehicle wheel, adjustment transverse arm is horizontal, and adjusts the position between two laser sensors, makes laser spots beat on tire tread, two laser spots, about symmetrical before and after hub for vehicle wheel center, finally go out toe-in value according to COMPUTER DETECTION software detection.
This measuring method is for combining locomotive wheel, the position of two points on wheel tyre is measured with two laser sensors, and require that 2 hub centre about wheel are symmetrical, during measurement, wheel maintains static all the time, but, for family car or passenger vehicle, surface of tyre is provided with decorative pattern and rhone, the tire of wheel there will be wearing and tearing, and on wheel, the degree of wear of each position is different, adopts different measurement points will produce larger measuring error.
Summary of the invention
Measuring accuracy can not be affected and the simple lower-cost toe-in of automobile measurement mechanism of structure after the object of this invention is to provide a kind of tire wear; The toe-in of automobile measuring method of measuring accuracy can not be affected after the present invention also aims to provide a kind of tire wear.
For achieving the above object, the present invention adopts following technical scheme:
A kind of toe-in of automobile measurement mechanism, comprise base, base is provided with the trailing arm that can stretch along the vertical direction, described trailing arm is connected with transverse arm flexible along the longitudinal direction, described transverse arm is provided with the alignment device for aiming at hub for vehicle wheel center, described transverse arm be provided with extend in left-right direction, can the rule of movement in left-right direction, described rule is provided with the measuring head for location survey fixed point.
Described measuring head is pilot pin, and pilot pin extends along the longitudinal direction, and the front end of described pilot pin or rear end have the tip portion for coordinating with measurement static fixing.
Described measuring head is pilot pin, and pilot pin extends along the longitudinal direction, and the front-end and back-end of described pilot pin all have described tip portion.
Described base is provided with universal wheel and the lockable mechanism for locking universal wheel.
Described base is provided with the base leveller for adjusting base level, and described transverse arm is provided with the transverse arm levelling device for regulating transverse arm level.
Use the toe-in of automobile measuring method of above-mentioned toe-in of automobile measurement mechanism, it is characterized in that: comprise the following steps:
(1) a pair toe-in of automobile measurement mechanism is located at respectively the left and right sides of wheel, makes alignment device be aligned in hub for vehicle wheel center, fixed car toe measurement device, the position of two toe-in of automobile measurement mechanisms is set to left benchmark and right benchmark respectively;
(2) on left wheel, get a left measurement fixed point, right wheel is got a right measurement fixed point, the measuring head of automobile measurement mechanism is positioned in corresponding measurement fixed point, and measures the left distance RL measured between fixed point and left benchmark with rule, the distance RR between right measurement fixed point and right benchmark;
(3) keep left and right benchmark constant, turn a wheel 180 °, again measure the left distance FL measured between fixed point and left benchmark, the distance FR between right measurement fixed point and right benchmark;
(4) distance set between left and right benchmark is K, draws according to computing formula: toe-in value=(K-FL-FR)-(K-RL-RR)=(RL-FL)-(RR-FR).
The left measurement fixed point got and right measurement fixed point are positioned at the longitudinal groove of corresponding tyre crown.
During rotating-wheel, the position of toe-in of automobile measurement mechanism immobilizes, and the rule of lateral wheel is regained laterally, and rule is that vehicle wheel rotation is stepped down.
In described step (2) during rotating-wheel, the measurement fixed point on wheel moves first down.
Advantageous Effects of the present invention: toe-in of automobile measurement mechanism of the present invention adopts rule to measure, this device comprises base, base is provided with the trailing arm that can stretch along the vertical direction, trailing arm is provided with the transverse arm that can stretch along the longitudinal direction, transverse arm is provided with dip stick, dip stick extends to left and right direction, and dip stick is provided with for being positioned at the measuring head measured in fixed point; When device is located at wheel both sides, the height of adjustment trailing arm makes alignment device be positioned at the center of hub for vehicle wheel, position residing for automobile measurement mechanism is reference position, measuring head is positioned in the measurement fixed point of wheel by adjustment transverse arm, and rule can be measured and measure fixed point and the distance between corresponding reference position.
The present invention arranges left benchmark and right benchmark respectively on the right side of the left side of left wheel and right wheel, and the distance set between two benchmark is K; Wheel is got one and measures fixed point, and measure first group of data, be respectively left benchmark and left measurement fix a point between distance RL, right benchmark and right measurement fix a point between distance RR, keep the invariant position of left and right benchmark, turn a wheel 180 °, measure left and right measurement fixed point and the distance between corresponding reference position again, measure second group of data and be respectively FL, FR, last calculates toe-in value according to formula toe-in value=(K-FL-FR)-(K-RL-RR)=(RL-FL)-(RR-FR); Left and right benchmark is kept to fix in twice measuring process in front and back, after rotating-wheel 180 °, again measure the distance measured between fixed point and benchmark, even if the tire wear of wheel like this, because front and back measure same position on wheel tyre for twice, even if the degree of wear is different on wheel, also measurement result can not be had influence on everywhere.
As a further improvement on the present invention, this toe-in of automobile measuring method is when measuring, the measurement fixed point got is positioned at the longitudinal groove of tyre crown, groove content is vulnerable to wearing and tearing, the distance at the bottom land distance hub for vehicle wheel center of longitudinal groove is certain, these data can be measured when wheel dispatches from the factory, the data at measurement fixed point distance hub for vehicle wheel center are data when wheel dispatches from the factory, like this when calculating top rake, direct utilization wheel inherent parameters calculates, and does not need again to measure the distance measuring fixed point and hub for vehicle wheel center.
Accompanying drawing explanation
Fig. 1 is the structural representation in prior art under toe-in of automobile survey instrument using state;
Fig. 2 is the schematic diagram that toe-in of automobile is measured;
Fig. 3 is the front elevation of toe-in of automobile measurement mechanism embodiment 1 of the present invention;
Fig. 4 is the one-piece construction schematic diagram of toe-in of automobile measurement mechanism embodiment 1 of the present invention;
Fig. 5 is toe-in of automobile measurement mechanism embodiment 1 of the present invention schematic diagram in a state of use;
Fig. 6 is the schematic diagram of toe-in of automobile measuring method of the present invention;
In figure: 1, base, 2, universal wheel, 3, levelling device, 4, trailing arm, 42, trailing arm bar, 43, trailing arm sleeve pipe, 44, holding screw, 5, transverse arm, 51, transverse arm bar, 52, transverse arm sleeve pipe, 53, slide rail, 54, tight fixed bolt, 6, dip stick, 61, rule, 62, pilot pin, 7, infrared alignment device.
Embodiment
The embodiment 1 of toe-in of automobile measurement mechanism of the present invention, as shown in Fig. 3, Fig. 4, Fig. 5, this device uses in use in pairs, and two toe-in of automobile measurement mechanisms are the symmetrical arranged on left and right sides being located at wheel respectively, is described here for the toe-in of automobile device be located on the right side of wheel.
Comprise base 1, base 1 is provided with leveling bolt 3, and leveling bolt 3 is configured for the base leveller of adjusting base level, and the lower end of base 1 is provided with universal wheel 2, facilitate toe-in of automobile measurement mechanism to move, universal wheel 2 has the lockable mechanism for locking universal wheel; Base 1 is provided with trailing arm 4, and trailing arm 4 can stretch along the vertical direction, and trailing arm 4 is provided with the transverse arm 5 that can stretch along the longitudinal direction; In the present embodiment, simple and compact for structure in order to make, the trailing arm bar 42 that trailing arm 4 comprises trailing arm sleeve pipe 43 and is arranged in trailing arm sleeve pipe 43, the lower end of trailing arm sleeve pipe 43 is fixed on base 1, trailing arm bar 42 is installed on trailing arm sleeve pipe from the upper end of trailing arm sleeve pipe, trailing arm bar 42 can lead up and down slip in trailing arm sleeve pipe, and trailing arm sleeve pipe 43 is provided with the holding screw 44 for locking trailing arm bar; The transverse arm sleeve pipe 52 that transverse arm 5 comprises transverse arm bar 51 and is set on transverse arm bar 51, the front end of transverse arm bar 51 is fixedly connected with trailing arm bar 42, and described transverse arm sleeve 52 is provided with the tight fixed bolt 54 for locating transverse arm sleeve portion; The front end of transverse arm 5 is fixed on the upper end of trailing arm bar, the rear end of transverse arm 5 overhangs, and the left side of transverse arm bar 51 is provided with infrared alignment device 7, and infrared alignment device 7 is for aiming at hub for vehicle wheel center, ensure that the two groups of measurement bays in left and right are symmetrical set, make the transverse arm of two groups of measurement bays parallel.
Transverse arm 5 is provided with level meter and transverse arm levelling device, according to the display of level meter, adjustable transverse arm levelling device makes transverse arm be in horizontality, the rear end of transverse arm 5 has slide rail 53, rule 61 is provided with in slide rail 53, one end of rule 61 has measuring head, measuring head is pilot pin 62, rule and pilot pin constitute measuring mechanism 6, the length direction of rule extends in left-right direction, dip stick left and right guiding can slide in slide rail, and described slide rail is rectangle, and slide rail is provided with the pointer being used to indicate rule high scale; In the present embodiment, the axis of pilot pin 62 extends along the longitudinal direction, and namely pilot pin and transverse arm be arranged in parallel, and the end of pilot pin has the tip portion for coordinating with wheel alignment, and front end has front tip part, and rear end has rear tip part.In other enforcements of toe-in of automobile measurement mechanism of the present invention, pilot pin only can be provided with tip portion in front end or rear end.
The toe-in of automobile measuring method of said apparatus is used to comprise the following steps:
(1) a pair toe-in of automobile measurement mechanism is located at the left and right sides of wheel, infrared alignment device hub for vehicle wheel center is aimed at, and fixed car toe measurement device, is set to left benchmark and right benchmark by the position of two toe-in of automobile measurement mechanisms;
(2) on left wheel, get a left measurement fixed point, right wheel is got a right measurement fixed point, the measuring head of automobile measurement mechanism is positioned in corresponding measurement fixed point, and measure first group of data with rule, the i.e. left distance RL measured between fixed point and left benchmark, the distance RR between right measurement fixed point and right benchmark;
(3) keep left and right benchmark constant, turn a wheel 180 °, measure second group of data with rule, be i.e. the left distance FL measured between fixed point and left benchmark, the distance FR between right measurement fixed point and right benchmark;
(4) distance set between left and right benchmark is K, draws according to computing formula: toe-in value=(K-FL-FR)-(K-RL-RR)=(RL-FL)-(RR-FR).
Schematic diagram under toe-in of automobile measurement mechanism using state as shown in Figure 5, the principle of toe-in of automobile measuring method of the present invention as shown in Figure 6, before measuring, first by automobile parking on platform, play positive dirction dish, wheel be adjusted to craspedodrome state; Then toe-in of automobile measurement mechanism is moved to lateral wheel, infrared alignment device is positioned at the center of hub for vehicle wheel, adjustment transverse arm is in level, universal wheel on locking base, position residing for left and right two toe-in of automobile measurement mechanisms is set to left benchmark and right benchmark, and the distance set between left benchmark and right benchmark is K.
The measurement fixed point of getting in process of the test is positioned at the longitudinal groove of tyre crown, because wheel tyre self is with longitudinal groove, pilot pin is stuck in longitudinal groove, tire self structure can be utilized to block pilot pin, pilot pin is facilitated to locate, and tire wear is not easy wearing and tearing in longitudinal groove, even if also can not affect measurement result.
The present invention is when measurement first group of data, measure the rear side that fixed point is positioned at wheel, the front end of pilot pin is stuck in longitudinal groove from the rear side of wheel, the front tip part of pilot pin is positioned to be measured in fixed point, left and right adjustment rule, and then the left distance RL measured between fixed point and left benchmark can be measured, the distance RR between right measurement fixed point and right benchmark.
After measuring first group of data, wheel is rotated 180 °, during rotation backwards, the measurement fixed point on wheel is moved first down; After rotation, measure the front side that fixed point is positioned at wheel, measure fixed point to be still horizontal with the line of hub centre, adjustment transverse arm and rule, be stuck in the longitudinal groove of tyre crown by the rear end of pilot pin on front side of wheel, the rear tip part of pilot pin is positioned to be measured in fixed point, measures second group of data, the i.e. left distance FL measured between fixed point and left benchmark, the distance FR between right measurement fixed point and right benchmark.
Constant in order to ensure the distance between left and right benchmark, the present invention keeps the toe-in of automobile measurement mechanism invariant position of wheel both sides in measuring process, during rotating-wheel, the rule of two toe-in of automobile measurement mechanisms is regained towards outside, and rule is that automobile is stepped down when moving vehicle.
When measurement first group of data, measure the front side that fixed point can also be positioned at wheel, be stuck in the longitudinal groove of tyre crown by the rear end of pilot pin on front side of wheel, the rear tip part of pilot pin is positioned to be measured in fixed point; Rotating-wheel 180 °, measurement fixed point on wheel is synchronous with wheel moves first down, after vehicle wheel rotation 180 °, measures the rear side that fixed point is positioned at wheel, the front end of pilot pin is stuck in longitudinal groove from the rear side of wheel, and the front tip part of pilot pin is positioned to be measured in fixed point; During rotation, ensure the invariant position of toe-in of automobile measurement mechanism, ensure that the measurement fixed point on wheel is moved, in the measuring process of twice, front and back first down, the measuring head of rule can first be positioned at from the front side of wheel to be measured fixed point, after to be positioned at from the rear side of wheel and to measure fixed point; Or measuring head can first from the rear side of wheel be positioned at measure fixed point, after from the front side of wheel be positioned at measure fixed point.
Claims (9)
1. toe-in of automobile measurement mechanism, comprise base, base is provided with the trailing arm that can stretch along the vertical direction, described trailing arm is connected with transverse arm flexible along the longitudinal direction, described transverse arm is provided with the alignment device for aiming at hub for vehicle wheel center, it is characterized in that: described transverse arm be provided with extend in left-right direction, can the rule of movement in left-right direction, described rule is provided with the measuring head for location survey fixed point.
2. toe-in of automobile measurement mechanism according to claim 1, is characterized in that: described measuring head is pilot pin, and pilot pin extends along the longitudinal direction, and the front end of described pilot pin or rear end have the tip portion for coordinating with measurement static fixing.
3. toe-in of automobile measurement mechanism according to claim 1, is characterized in that: described measuring head is pilot pin, and pilot pin extends along the longitudinal direction, the front-end and back-end of described pilot pin all have described tip portion.
4. the toe-in of automobile measurement mechanism according to claim 1 or 2 or 3, is characterized in that: described base is provided with universal wheel and the lockable mechanism for locking universal wheel.
5. the toe-in of automobile measurement mechanism according to claim 1 or 2 or 3, is characterized in that: described base is provided with the base leveller for adjusting base level, and described transverse arm is provided with the transverse arm levelling device for regulating transverse arm level.
6. use the toe-in of automobile measuring method of toe-in of automobile measurement mechanism as claimed in claim 1, it is characterized in that: comprise the following steps:
(1) a pair toe-in of automobile measurement mechanism is located at respectively the left and right sides of wheel, makes alignment device be aligned in hub for vehicle wheel center, fixed car toe measurement device, the position of two toe-in of automobile measurement mechanisms is set to left benchmark and right benchmark respectively;
(2) on left wheel, get a left measurement fixed point, right wheel is got a right measurement fixed point, the measuring head of automobile measurement mechanism is positioned in corresponding measurement fixed point, and measures the left distance RL measured between fixed point and left benchmark with rule, the distance RR between right measurement fixed point and right benchmark;
(3) keep left and right benchmark constant, turn a wheel 180 °, again measure the left distance FL measured between fixed point and left benchmark, the distance FR between right measurement fixed point and right benchmark;
(4) distance set between left and right benchmark is K, draws according to computing formula: toe-in value=(K-FL-FR)-(K-RL-RR)=(RL-FL)-(RR-FR).
7. toe-in of automobile measuring method according to claim 6, is characterized in that: the left measurement fixed point of getting and right measurement fixed point are positioned at the longitudinal groove of corresponding tyre crown.
8. toe-in of automobile measuring method according to claim 6, is characterized in that: during rotating-wheel, and the position of toe-in of automobile measurement mechanism immobilizes, and the rule of lateral wheel is regained laterally, and rule is that vehicle wheel rotation is stepped down.
9. toe-in of automobile measuring method according to claim 6, is characterized in that: in step (2) during rotating-wheel, and the measurement fixed point on wheel moves first down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510177281.2A CN104792555B (en) | 2015-04-15 | 2015-04-15 | Toe-in of automobile measuring device and the toe-in of automobile measuring method using the device |
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| CN201510177281.2A CN104792555B (en) | 2015-04-15 | 2015-04-15 | Toe-in of automobile measuring device and the toe-in of automobile measuring method using the device |
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| CN105806632A (en) * | 2016-04-15 | 2016-07-27 | 奇瑞汽车股份有限公司 | Device and method for measuring camber angle of wheel |
| CN107436121A (en) * | 2017-07-27 | 2017-12-05 | 安徽江淮汽车集团股份有限公司 | Suspension height detection means |
| CN108844487A (en) * | 2018-05-03 | 2018-11-20 | 江苏大学 | A kind of equation motorcycle race toeing-in angle measuring device |
| CN109253890A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | Bridge positioning adjustment device before large-sized truck double steering |
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| CN114812482A (en) * | 2021-01-20 | 2022-07-29 | 本田技研工业株式会社 | Object setting apparatus and object setting method using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105806632A (en) * | 2016-04-15 | 2016-07-27 | 奇瑞汽车股份有限公司 | Device and method for measuring camber angle of wheel |
| CN109253890A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | Bridge positioning adjustment device before large-sized truck double steering |
| CN107436121A (en) * | 2017-07-27 | 2017-12-05 | 安徽江淮汽车集团股份有限公司 | Suspension height detection means |
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| CN108844487A (en) * | 2018-05-03 | 2018-11-20 | 江苏大学 | A kind of equation motorcycle race toeing-in angle measuring device |
| CN108844487B (en) * | 2018-05-03 | 2020-06-09 | 江苏大学 | Formula car wheel toe-in angle measuring device |
| CN111486774A (en) * | 2020-04-29 | 2020-08-04 | 房召兵 | Large truck four-wheel positioning and measuring method |
| CN111486774B (en) * | 2020-04-29 | 2021-12-14 | 房召兵 | Large truck four-wheel positioning and measuring method |
| CN114812482A (en) * | 2021-01-20 | 2022-07-29 | 本田技研工业株式会社 | Object setting apparatus and object setting method using the same |
| CN114812482B (en) * | 2021-01-20 | 2024-04-23 | 本田技研工业株式会社 | Target setting device and target setting method using the same |
| US11976919B2 (en) * | 2021-01-20 | 2024-05-07 | Honda Motor Co., Ltd. | Target installation apparatus and target installation method using the same |
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Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co., Ltd Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou Patentee before: Zhengzhou Yutong Bus Co., Ltd |